Lock.



P. ZIRON.

LOCK.

APPLICATION FILE-.1) MAY 3, 1909.

$62,486 Patented June 28, 1910.

Pam?

ANDREW a, GRAHAM c0, PNDTD-LIYHOGRAPHERS WASHINGTON. u. c.

UNTTED STAES AENT @FFTQE.

PAUL ZIBON, OF NEW YORK, N. Y., ASSIGNOR T0 NORIZ MANUFACTURING COMPANY, A CORPORATION 013 MAINE.

LOCK.

T 0 all whom it may concern:

Be it known that 1, PAUL ZIRON, a citizen of the United States of America, residing at- New York city, in the county and State of New York, have invented certain new and useful Improvements in Locks, of which the following is a specification.

The present invention has for its object a lock, either of the key or keyless type, the parts of which are of a construction such that the bolt cannot be thrown if the tumblers or their equivalents are displaced, removed or destroyed; and the parts of which are furthermore so positioned as to be practically inaccessible from the key-hole and inoperative except by the proper key.

A further object of the invention is a peculiar construction and arrangement of the tumblers, fences and other elements of the lock whereby extreme accuracy of adjustment may be had, and all lost motion and play of parts avoided, and the size of the parts reduced to a minimum.

The invention which is adapted for looks generally, is particularly useful in connection with combination or permutation locks of either the key or keyless type; and such locks when built in accordance with the present invent-ion are of few parts, and are simple and compact in structure, no matter how large the number of permutations or combinations to which they may be adapted.

The invention in its preferred form is especially adaptable to use in connection with a lock of the character set forth in my 00- pending application, Serial Number $9,963, filed June 23rd, 1908, wherein the tumblers are pivoted, and the combination or permutation determined and changed by setting and adjusting of the positions of the tumbler pivots or fulcrums.

The primary object of the invention is obtained by the introduction and use of boltcontrolling members or fences which are of peculiar construction and which will assume a bolt-releasing position only if acted upon by their respective tumblers or the equivalents of the latter while the said tumblers or their equivalents are in predeter mined positions. The fences, as is well known, are in the art ordinarily controlled by tumblers, and must be released by the latter, and upon being so released, must Specification of Letters Patent.

Application filed May 8, 1909.

Patented June 28, 1910.

Serial No. 494,753.

move a certain minimum distance in order that the bolt may in turn be released. Usually in looks of the prior art, any movement of the fences beyond such minimum distance serves equally well to bring them into a bolt-releasing position. Where any movement of the fences beyond a minimum brings them into bolt-releasing position, or where the fences may assume a bolt-releasing position even though they do not move into the particular gatings provided for them in their respective tumblers or the equivalents of the latter, then, obviously, the bolt can be thrown whenever the tumblers or their equivalents are removed or destroyed. In the present invention, however, the tumblers or their equivalents do not serve merely as a means to release the fences when the proper key is introduced, but have the further function of positively defining or determining the extent of movement and the final position of the fences and their component parts so that the bolt may be thrown. In my invention the fences will not assume a bolt-releasin position if they are not acted upon, or if fheir movement is not absolutely defined or restricted, by their respective tumblers or the equivalents of the latter while the said tumblers or their equivalents are in predetermined positions. It is therefore obvious that if the tumblers or their equivalents are not in the predetermined positions, or are destroyed or removed the fences and their component parts cannot assume or be given the bolt-releasing posi tions.

While T have shown the invention as applied to a lock in which the tumblers serve to allow to the fences a definite and predetermined movement, no more and no less, and as applied to a lock in which the fences are pivoted and. rocked by the tumblers and thus brought into bolt-releasing or bolt-operating position, it is obvious that the fences can be so constructed as to consist of component parts which are pressed together by the side walls of the tumbler gatings and thereby operate to release the bolt, and in this mode of construction it would be immaterial how far the fences move into the tumbler gatings as long as they move into them far enough to bring their component parts into the bolt-releasing position.

The constructions here indicated illustrate 1 plate of the lock,

the principles of my invention.

Another object of the invention is to prevent interference with or distinction of the tumblers, as by lock picking instruments inserted through the key-hole. In the preferred form of the invention the tumblers are absolutely shut off from the keyhole and access to the tumblers from the keyhole is impossible. It will also be seen that, if this or a similar construction is used, the tumblers can be acted upon close to their fulcrums and that, therefore, the tumblers will have a large throw although the wards of the key are very short.

Other objects of the invention will presently appear in connection with the accompanying drawings.

I desire to be distinctly understood that I do not limit myself to any particular mode of construction, but claim as my own any application of the broad principles of my invention.

Having briefly set forth the objects and nature of the invention, I will now describe in detail certain applications of the same in connection with the accompanying draw; ings, in which Figure 1 is a view in elevation of a lock embodying the invention, the lock being assembled and the bolt having been thrown. Fig. 2 is a view of the lock shown in Fig. 1, the parts being in another position. Fig.

3 is a view on the line 9-9 of Fig. 1. Fig.

4 shows a form of key for operating the lock of Figs. 1 and 2. Fig. 5 is a detail view of a modified form of the device for throwing tumblers such as shown 1n Flgs.

. 1 and 2. Fig. 6 is a view of a key in use with the device shown in Fig. 5. Fig. 7 is a diagrammatic view showing a modified form of the invention. Fig. 8 is a view of the form of the invention shown in Fig. 7., the parts being in another position.

Referring now to the drawings (Figs. 1 .and 2), the tumblers 30 and 31 are shown as pivoted to plates 32 and 33. These plates are independently adjustable by means of slots 34, cooperating with set screws 35 and 35, which former (35) may be loosened to allow the plates to be moved, and tightened to lock the plates in any adjusted position. The springs 36 hold one end of the tumblers normally depressed. In this form of the invention, the key wards do not act directly upon the tumblers, but through the intermediary of a set of box-like devices 37,

each pivoted to one end of one tumbler. These boxes together form a box-like structure which prevents access to the tumblers and other parts of the look through thekeyhole, should an attempt be made to pick the lock. These boxes are capable of a sliding movement in guides 38, behind the front and the opening through the boxes is in line with the key-hole 39. The key is of the type shown in Fig. 4, having wards 40, which may or may not be adjustable to different settings. If not adjustable to different settings, however, a dif ferent key would be required for each combination of the lock. Vhere adjustable, however, the wards may be moved through a slot in the stem 41 of the key, and tightened in any desired position by means of a set screw 42.

It will be noted that the wards 40 of the key are adapted to protrude from each side of the key stem. According to the distance the wards project, the box members 37 will be lifted a greater or less distance, when a key is inserted and turned. One arm of the ward serves to lift the box, and the other arm prevents it from being lifted too far by friction with an adjoining member, or otherwise. These double wards also serve to give to the different box members their absolutely correct position, and to overcome any adhesion between the different fulcrum plates 32 and 33, thereby assuring to the latter their correct position when the combination is being changed. Instead of a box member such as 37 a T-shaped member, such as 43 (see Fig. 5), may be used for operating the tumblers, and in this case, a key, such as shown in Fig. 6, may be used, the wards of which have only one arm. The members 43, are returned to their normal position by springs 36.

The bolt 44 is mounted to have movement in suitable slides in the lock casing 45. The bolt has an arm 46, extending inward, against the end of which a spring 47 bears. Adapted to have a certain amount of free movement between the inner end 48 of the bolt and a shoulder 49 on the arm 46, is a member 50. This member 50 has a lower extension 51, adapted to be engaged by a finger 52, on a slide 53, the slide 53 extending to the key-hole and having a downward turned finger 54, adapted to be engaged by one ward of the key.

Mounted to have a sliding movement on the lower extension of the member 50, and on a suitable support 55, are the fences or slides 56, which cooperate with gatings in the tumblers 30, 31. Springs 57 engaging the fences 56 tend to urge the latter toward the tumblers. Pivoted to the lock casing at a point 90 between the fences 56 and the slide 53 is an arm 89, which lies either next to the front plate or next to the rear plate of the lock casing. This arm 89 has at its other end a pin 91. Each of the fences 56 is provided with a slot 88. Pin 91 on the arm 89 passes through the slots 88 of all the fences 56. When the lock is in a looking position the arm 89 has the position shown in Fig. 2. Pin 91 on the arm 89 is then in that part of the slots 88 which runs at a right angle to the lower surface of the fences 56. Fig. 1 shows the position of the arm 89, when the bolt has been thrown. The pin 91 is then in that part of the slots 88 which is parallel with the lower surface of the fences 56. The object of the arm 89 and the slots 88 is to prevent each one of the fences 56 from moving into its respective tumbler gating, unless all of the fences 56 are opposite their respective tumbler gatings. The arm 89 and the slots 88 thus make it impossible to open the look by moving each tumbler separately until its gating is opposite its respective fence. Even though the gatings of all tumblers except one are opposite their respective fences, these fences cannot move into the gatings. The wall of slot 88 of that fence which cannot move because its tumbler gating does not register with it will hold pin 91 on arm 89, and. thus arm 89, in the position shown in Fig. 2, and will thereby prevent any of the fences from moving. When, however, all of the tumbler gatings are opposite their respective fences, the fences can move into the gatings. Pin 91 on arm 89 will then slide along slots 88 thereby turning arm 89. As soon as pin 91 on arm 89 has slid along the slots 88 far enough to leave that part of slots 88 which is at a right-angle to the lower surface of fences 56, and has entered that part of slots 88 which is parallel with the said lower surface of fences 56, then the fences 56 can move independently of each other. The gatings 30 and 31 are made of different depths (see Figs. 1 and 2), and fences 56 now slide, impelled by springs 57 until they touch the rear wall of their respective tumbler gatings. The object of having the fences 56 move different distances before they assume a bolt-releasing position is to make it impossible to line the fences up by a straight edge even though access should be had to the lock mechanism.

Pivoted to the lock casing at a point between the lower extension 51 and an upper extension 57 of the member 50, is a hammershaped device 58. When the bolt is in looking position, this hammer rests upon the upper surfaces of the fences 56 (see Fig. 2). The upper surface of each of the fences 56 is, however, grooved, or cut away, as at 59, so that in certain positions of the fences, the hammer-shaped device 58 may drop or be forced by a spring 59 from the position shown in Fig. 2 to the position shown in Fig. 1. Then in the position shown in Fig. 2, a shoulder 60 on the hammer 58 lies in the path of the upper extension 57 of the member 50, and prevents the latter from being moved by the slide 53, and, naturally, prevents the slide 53 from being moved by the.

key beyond the shoulder 51 on the slide 50. The bolt proper, which is engaged at 4:9, by the member 50, consequently, cannot be moved by the key, while the hammer 58 is in the position shown in Fig. 2.

Then the proper key is inserted in the lock and turned, one ward of the key engages the depending finger 5 1 on the slide 53 and moves it from the dotted position shown in Fig. 2 to the position shown in full lines in that figure. This movement of the slide 53 moves an upwardly projecting finger or lug 62 on the slide 53 away from a set of depending fingers or lugs 63, one of which latter is carried by each of the fences 56, and the fences 56 are then free to more under the action of the spring 57 toward the tumblers 30, 31. As the key continues to rotate, the tumblers 30, 31 are moved to bring their gatings into registration with the fences 56, and the latter then enters the gatings. As has already been explained, the pin 91 on the arm 89 now slides along in slots 88 (thereby, of course, turning arm 89) until the pin has left that part of slots 88, which is a right-angle with the lower surface of fences 56 and has entered that part of the slots which is parallel with the lower surface of the said fences. Then the fences 56 can move independently of each other and each moves into its respective tumbler gating until it touches the rear wall thereof. The grooves 59 on the fences 56 have been cut in different places on fences 56, according to the depths of the respective tumbler gatings, so that when each fence has moved into its respective tumbler gating to the rear wall thereof, the grooves 59 on the upper surfaces of fences 56, will all be under the hammer 58, and the latter, under the action of the spring 59, drops into the pockets 59 withdrawing the hammer shoulder 60 from the path of the extension 57 of the member 50. The member 50 is then free to be moved, and upon further rotation of the key the shoulder 52 of the slide 53 moves the member 50, and the latter engaging finger 19 on the bolt, moves the bolt. When the bolt is turned back the slide 53 is released to the action of the spring 61, and the finger 52 on the slide 53, withdrawing from the finger 51 on the member 50, releases the latter member and the bolt to the action of the spring 41-7 which returns these to their normal position. The movement of the member 50 to this normal position withdraws the extension 57 from over the hammer 58, and the latter is then free to be raised to the position shown in Fig. 2. Upon further movement of the slide 53 the lug 62 on the top thereof engages the lugs 63 on the fences, withdrawing the fences from the gatings against the action of their springs 57, which are of less strength than the spring 61. As the fences are moved back by the lug 62, they also restore the arm 89 with its pin 91 to the position shown in Fig. 2. The fences by moving back out of their respective tumbler gatings also cause the hammer 58 to ride up the cam provided by the pockets 59, against the action of its spring 59, again into the position shown in Fig. 2, the slide 53 then being in the position shown in dotted lines in Fig. 2.

In Fig. 2, the lock is shown with the parts in the position assumed upon an attempt to open thelock by the wrong key. It will be noted that while the tumbler 30 is in the position to receive its fence, the tumbler 31 is not in such position. As already explained neither fence can move under such circumstances. The fence corresponding to tumblers 31 is held by the outer surface of tumbler 31, while the fence corresponding to tumbler 30 is prevented from moving by the pin 91 on the arm 89. The grooves 59 on the upper surfaces of the two fences are therefore not brought under the hammer 58, and the latter can consequently not be depressed. This, of course, prevents the bolt from being thrown. Should the fences 30 and 31 be destroyed or removed and the slide 53 be moved as far as a key would move it so as to allow the fences to move under the action of their respective springs 57, the fences will move until the fingers 63 touch the guide 55, which movement is greater for each one of the fences than the movement the fences would have if they moved into their proper tumbler gatings. The result would be that the grooves 59 on their upper surfaces would not be under the hammer 58, and the latter could not be depressed, and the lock could not be opened. Thus it will be seen that destruction or removal of the tumblers will not make it possible to open the lock, but, on the contrary, will make it absolutely impossible to throw the bolt as the fences 56 must move different distances to get into bolt releasing positions, and with the tumblers destroyed, the only means to place the fences into bolt-releasing positions is gone.

In order that the bolt may be operated from within, as by means of a door-knob, an arm 64, operated from the door-knob, is adapted to engage a pin 65 on the bolt. The clearance between the surface 48 of the bolt and the member 50, is sufficient to permit the movement of the bolt from the arm 64.

The form of the invention shown diagrammatically in Figs. 7 and 8 differs from the other forms shown, in that the fence 92 is pivoted at 103. The tumbler 93, pivoted at 94, has at one end a pin 95, which fits into and is in engagement with, the slot 96 of the fence 92, thereby controlling the position of the fence. In Fig. 7 one end of tumbler 93 has been raised by the proper key, and pin lock casing. Thereby the tumbler 93, which 7 is in operative connection with fence 92, has also been turned until both, the fence and the tumbler, have assumed the position shown in Fig. 8. The gating 98 is now not opposite the bolt, and the latter cannot be thrown. It is clear that only the right key can put the tumbler 93 and the fence 92 into the boltreleasing position. While Figs. 7 and 8 show only one tumbler and its corresponding fence, it is clear that as many tumblers and corresponding fences as desired may be used. The pivots 94 are shown as adjustable by means of slides 32 and set screws 35, such as employed for adjusting the pivots of the tumblers 31 of Fig. 2. r

If in a lock of the construction shown in Figs. 7 and 8, the tumblers 93 should be removed or destroyed, the fences 92 will be held in non-bolt-releasing positions by their respective springs 97. In order to make a lining up of fences 92 by a straight edge impossible, the gatings 98 can be cut in different places on the different fences, and if this is done a lining up of the slots 96 will not bring the gatings 98 of the different fences into the bolt-receiving position.

Other variations of the lock structure within the scope of the invention will be obvious to any skilled mechanic or locksmith, and further illustration of the invention is deemed unnecessary.

Having described my invention, what I now claim is:

1. In a lock, the bolt, a movable device for restraining and releasing the bolt, said device being in a bolt operating position when at an intermediate point of its path of movement and in a bolt restraining position when on either side of said intermediate point of its path of movement, a stop movable by the lock operating means for arresting said device at said intermediate point of its path of movement and means for resiliently pressing the movable device against the stop when the stop is at rest in the bolt releasing posi tion.

2. In a lock, the bolt, a movable device for restraining and releasing the bolt, said device being in a bolt operating position when at an intermediate point of its path of move ment, and in a bolt restraining position when on either side of said intermediate point of its path of movement, and a stop movable from the lock operating means for normally preventing the movement of said device beyond said intermediate point of the path of its movement, said device having in the normal operation of the lock movement to and from said stop.

3. In a lock, the bolt, a movable device for restraining and releasing the bolt, said device being in a bolt operating position when at an intermediate point of its path of movement, and in a bolt restraining position when on either side of said intermediate point of its path of movement, and means normally movable independently of said device for controlling the movement of said device to said intermediate bolt operating position, and for preventing the movement of said device beyond said bolt operating position.

a. In a lock, the bolt, a movable device for restraining and releasing the bolt, said device being in a bolt releasing position when at an intermediate point of its path of movement, and in a bolt restraining position when on either side of said intermediate point of its path of movement, a tumbler for con trolling the movement of said device to said intermediate bolt operating position and for preventing the movement of said device beyond said intermediate position and means for pressing the movable device against the tumbler when the tumbler is at rest in the bolt releasing position.

5. In a lock, the bolt, a movable device for restraining and releasing the bolt, said device being in a bolt releasing position when at an intermediate point of its path of movement, and in a bolt restraining position when on either side of said intermediate point of its path of movement, and means actuated by the lock operating means controlling the operation of said first named device, releasing said device so that the latter may move to the intermediate bolt releasing position thereof, and preventing movement of said device beyond said intermediate position.

6. In a lock, a casing therefor having a key hole, a movable bolt releasing member within the casing, and a movable device within the casing lying at all times between the key hole and all parts of the first named bolt releasing member to prevent said member from being engaged by false devices inserted through the key hole, said intervening device being engaged by the key and in turn actuating the bolt releasing device upon movement of the key.

7 In a lock, the bolt, movable devices for restraining and releasing the bolt, said devices being in a bolt releasing position when at an intermediate point of their paths of movement, and in bolt restraining positions when 011 either side of said intermediate point of their paths of movement, means for moving said devices to the bolt releasing position, and other means for normally preventing the movement of said devices beyond the bolt releasing position.

8. In a lock, the bolt, movable devices for restraining and releasing the bolt, said devices being in a bolt releasing position when at an intermediate point of their paths of movement, and in bolt restraining positions when on either side of said intermediate point of their paths of movement, a series of stops movable independently and to different degrees by the lock operating means for normally preventing the movement of said devices beyond their said intermediate point of their paths of movement and means for pressing said bolt releasing devices against said stops when the stops are in a bolt releasing position.

9. In a lock, the bolt, movable devices for restraining and releasing the bolt, said devices being in a bolt releasing position when at an intermediate point of their paths of movement, and in bolt restraining positions when on either side of said intermediate point of their paths of movement, tumblers movable independently and to different degrees to and from which tumblers said devices have movement in the normal operation of the lock and by means of which tumblers said devices are arrested at their intermediate bolt releasing positions.

10. In a lock, the bolt, fences controlling the operation of the bolt, tumblers controlling the operation of the fences, the tumblers having gatings of different depth adapted to receive the fences and brought into registration with the latter.

11. In a lock, the bolt, fences controlling the operation of the bolt, tumblers cooperating with the latter to permit of different degrees of movement of the fences to allow the bolt to be thrown and means for moving the fences independently of the tumblers.

12.111 a look, a series of independently movable members, means for moving the same, and other means whereby each one of said members is prevented from moving unless all of said members can move, said lastnamed means also compelling the said members to move together for a certain distance, and after they have moved together for a certain distance, allowing the said members to move independently of each other.

13. In a look, a series of movable members, means for moving said members, means for locking said members to cause the same to move together a certain distance and thereafter releasing said members to independent movement.

14. In a lock, a series of movable members, means for moving said members, means preventing independent movement of said members during a part of their movement,

and thereafter releasing said members to independent movement.

15. In a lock, the bolt, a set of fences controlling the operation of the bolt, a set of tumblers controlling the operation of the fences, means for actuating the tumblers from the lock operating means, and means attached to said tumbler actuating means and forming a partition between the lock operating means and the tumblers.

1-6. In a lock, the bolt, a set of fences controlling the operation of the bolt, a set of tumblers controlling the operation of the fences, means for actuating the tumblers from the lock operating means, said tumbler actuating means having a wall or extension thereof which projects between the lock operating means and the tumblers to separate the former from the latter.

17. In a lock, the bolt, a set of fences controlling the operation of the bolt, a set of tumblers controlling the operation of the fences, means for actuating the tumblers from the lock operating means, said tumbler actuating means together forming a box-like structure inclosing the lock operating means when the latter is in the key-hole, and separating the same from the tumblers.

18. In a lock, the bolt, a set of fences controlling the operation of the bolt, a set of tumblers controlling the operation of the fences, means for actuating the tumblers from the lock opera-ting means, said tumbler actuating means forming a partition of independently movable sections separating the passage for the lock operating means from the tumblers.

19. In a lock, the bolt, tumblers for controlling the operation of the bolt, lock operating means for actuating the tumblers, and

extensions to each tumbler on either side of the lock operating means, wards or projections on the lock operating means adapted to engage simultaneously the tumbler extensions on either side thereof, whereby the adjustment of the tumbler is positively -con trolled. V

20. In a lock, the bolt, tumblers for controlling the operation of the bolt, pivots on which the tumblers are independently adjustable, means for adjusting and setting said pivots, attachments or extensions to the tumblers whereby the same may be engaged on two sides by the lock operating means to positively control in two directions the adj ustment of the pivot setting means in resetting the lock.

21. In a lock, the bolt, tumblers for controlling the operation of the bolt, pivots on which the tumblers are independently adjustable, independently adjustable slides on which the pivots are severally carried, means for adjusting :and setting said slides, attachments or extensions to the tumblers whereby was the same may be engaged on two sides by the lock operating means to positively control in two directions the attachments of the slides in resetting the lock.

22. In a lock, the bolt, a tumbler actuated by the lock operating means, means controlled by the tumbler and controlling the bolt, means tending to throw the tumblercontrolled means beyond its bolt releasing position and away from the initial position of the parts whenever unrestrained by the tumbler.

23. In a lock, the bolt, a tumbler actuated by the lock operating means, means controlled by the tumbler and controlling the bolt, a spring tending to throw the tumblercontrolled means beyond its bolt releasing position and away from the initial position of the parts whenever unrest-rained by the tumbler.

24:. In a lock, the bolt, a tumbler actuated by the lock operating means, means controlled by the tumbler and controlling the bolt, resilient means tending to throw the tumbler-controlled means beyond its bolt re leasing position and away from the initial position of the parts whenever unrestrained by the tumbler.

25. In a lock, the bolt; three elements cooperating to control the bolt; one of said elements having a movement to the bolt releasing position, which movement may be varied for dilferent settings of the lock; another of said elements having a normal movement to the bolt releasing position, which movement may be the same for all settings of the lock, and having also an abnormal movement to a bolt locking position beyond the bolt releasing position upon injury .to the lock; and the third of said elements whenever operated having but one definite movement; and means for effecting the aforesaid movements.

26. In lock, the bolt, a tumbler and a fence controlling the operation of the bolt, in normal operation one of said members having rotary movement and the other of said members movement to and from said rotary member, and separately movable means intermediate the bolt and said fence to release the bolt when said fence is in one definite position only.

27. In a lock, the bolt; two elements cooperating to control the bolt; one of said elements having a movement to the bolt releasing position, which movement may be varied for different settings of the lock; the

:otherof said elements being controlled by the control is abnormally removed, and means for effecting the aforesaid movements.

28. In a look, a bolt controlling member controlled to have a definite normal movement to a bolt releasing position, and having an abnormal movement to a bolt locking posit-ion beyond the bolt releasing position and away from the initial position when such control is removed, means for effecting the aforesaid movements of said element, and means for controlling the normal movement of the same as aforesaid.

29. In a lock, the bolt, three elements controlling the bolt, each of said elements being movable independently of the other when the others are stationary and being immovable at times when either of the other two is moving.

30. In a lock, the bolt, three elements controlling the bolt, each of said elements being movable independently of the other when the others are stationary and being immovable at times when either of the other two is moving, one of said elements having a rotary movement and another of said elements being movable toward and from said rotary element.

31. In a lock, the bolt, three elements controlling the bolt, each of said elements being movable independently of the other when the others are stationary and being immovable at times when either of the other two is moving, one of said elements having rotary movement and another of said elements being movable toward and from said rotary element, and the third element having a cam-bearing on the last named element.

32. In a lock, the bolt, three elements controlling the movement of the bolt, each of said elements having resilient bearing upon another of said elements and being controlled thereby in its movement in one direction, but having movement in another direction independent of the element against which it bears.

33. In a lock, the bolt, three elements controlling the movement of the bolt, each of said elements having resilient bearing upon another of said elements and being controlled thereby in its movement, in one direction, but having movement in another direction independent of the element against which it bears, one of said elements having rotary movement and another of said ele ments having reciprocating movement.

34. In a lock, the bolt, three element-s controlling the movement of the bolt, each of said elements having resilient bearing upon another of said elements and being controlled thereby in its movement, in one direction, but having movement in another direction independent of the element against which it bears and each of said elements being free to have abnormal movement when the element upon which it bears is removed.

35. In a lock, the bolt, a casing for the lock having a key hole therein, a number of elements within the casing cooperating to release the bolt, and a number of other elements within the casing, one for actuating each of said first named elements and intervening between the latter and the key hole, each of said last named elements being adapted to be engaged by one ward of the key and being shaped to embrace the key on three sides thereof, so that together said key operated elements form a boXlike structure preventing access to the first named members by means of false devices inserted through the key hole.

36. In a lock, the bolt, a number of independently movable elements cooperating to release the bolt, a number of other elements pivotally mounted, one for controlling each of said first named elements, and means for relatively shifting the fulcrums of said pivotally mounted elements to vary the throw of such elements.

Signed by me at New York city, county and State of New York, this 7th day of May, 1909.

PAUL ZIRON.

Witnesses:

WILLIAM H. HEAGERTY, FRANCIS J. ERWIN. 

